Choose a scene and navigate within the first image. One click changes the position on touchscreens. One click on the zoomed-in image opens the original in a new window. The first image shows the scaled photograph of the test device.

Screen Flickering / PWM (Pulse-Width Modulation)

ℹ

To dim the screen, some notebooks will simply cycle the backlight on and off in rapid succession - a method called Pulse Width Modulation (PWM) . This cycling frequency should ideally be undetectable to the human eye. If said frequency is too low, users with sensitive eyes may experience strain or headaches or even notice the flickering altogether.

Screen flickering / PWM detected

250 Hz

≤ 99 % brightness setting

The display backlight flickers at 250 Hz (Likely utilizing PWM) Flickering detected at a brightness setting of 99 % and below. There should be no flickering or PWM above this brightness setting.

The frequency of 250 Hz is relatively low, so sensitive users will likely notice flickering and experience eyestrain at the stated brightness setting and below.

In comparison: 51 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 9654 (minimum: 43 - maximum: 142900) Hz was measured.

Display Response Times

ℹ

Display response times show how fast the screen is able to change from one color to the next. Slow response times can lead to afterimages and can cause moving objects to appear blurry (ghosting). Gamers of fast-paced 3D titles should pay special attention to fast response times.

↔ Response Time Black to White

4 ms ... rise ↗ and fall ↘ combined

↗ 2 ms rise

↘ 2 ms fall

The screen shows very fast response rates in our tests and should be very well suited for fast-paced gaming.In comparison, all tested devices range from 0.8 (minimum) to 240 (maximum) ms. » 1 % of all devices are better.This means that the measured response time is better than the average of all tested devices (25.4 ms).

↔ Response Time 50% Grey to 80% Grey

4.8 ms ... rise ↗ and fall ↘ combined

↗ 2.4 ms rise

↘ 2.4 ms fall

The screen shows very fast response rates in our tests and should be very well suited for fast-paced gaming.In comparison, all tested devices range from 0.9 (minimum) to 636 (maximum) ms. » 2 % of all devices are better.This means that the measured response time is better than the average of all tested devices (40.5 ms).

(+) The average temperature for the upper side under maximal load is 31.8 °C / 89 F, compared to the average of 33 °C / 91 F for the devices in the class Smartphone.(+) The maximum temperature on the upper side is 33.8 °C / 93 F, compared to the average of 35.5 °C / 96 F, ranging from 22.4 to 51.7 °C for the class Smartphone.(+) The bottom heats up to a maximum of 33.4 °C / 92 F, compared to the average of 34.1 °C / 93 F(+) In idle usage, the average temperature for the upper side is 26.2 °C / 79 F, compared to the device average of 33 °C / 91 F.

Frequency diagram (checkboxes can be checked and unchecked to compare devices)

Samsung Galaxy A9 2018 audio analysis

(+) | speakers can play relatively loud (87.5 dB)Bass 100 - 315 Hz(-) | nearly no bass - on average 25.9% lower than median(±) | linearity of bass is average (11.4% delta to prev. frequency)Mids 400 - 2000 Hz(+) | balanced mids - only 3.8% away from median(+) | mids are linear (4.8% delta to prev. frequency)Highs 2 - 16 kHz(±) | higher highs - on average 7.7% higher than median(+) | highs are linear (5.2% delta to prev. frequency)Overall 100 - 16.000 Hz(±) | linearity of overall sound is average (21.2% difference to median)Compared to same class» 21% of all tested devices in this class were better, 11% similar, 68% worse» The best had a delta of 13%, average was 25%, worst was 44%Compared to all devices tested» 49% of all tested devices were better, 8% similar, 43% worse» The best had a delta of 3%, average was 21%, worst was 53%

Xiaomi Pocophone F1 audio analysis

(+) | speakers can play relatively loud (83.4 dB)Bass 100 - 315 Hz(-) | nearly no bass - on average 24.4% lower than median(±) | linearity of bass is average (10.6% delta to prev. frequency)Mids 400 - 2000 Hz(±) | higher mids - on average 6.2% higher than median(±) | linearity of mids is average (10.2% delta to prev. frequency)Highs 2 - 16 kHz(±) | higher highs - on average 5.3% higher than median(+) | highs are linear (5.8% delta to prev. frequency)Overall 100 - 16.000 Hz(±) | linearity of overall sound is average (23.4% difference to median)Compared to same class» 38% of all tested devices in this class were better, 14% similar, 48% worse» The best had a delta of 13%, average was 25%, worst was 44%Compared to all devices tested» 62% of all tested devices were better, 8% similar, 29% worse» The best had a delta of 3%, average was 21%, worst was 53%